From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Graph and table comparing practical and theoretical data on steering wheel movement induced by front axle movement for various chassis models.
| Identifier | ExFiles\Box 67\4\ scan0256 | |
| Date | 2nd February 1927 guessed | |
| TITLE: ANGULAR MOVEMENT OF STEERING WHEEL INDUCED BY FRONT AXLE MOVEMENT PRACTICAL RESULTS. GRAPH: Y-AXIS: STEERING WHEEL ROTATION (Degrees: 10°, 20°, 30°, 40°) X-AXIS: AXLE MOVEMENT RELATIVE TO THE FRAME (UP: 2", 1"; DOWN: 1", 2", 3", 4") PLOT LINES: - 20. H.P. - 9 G III K.{Mr Kilner} SERIES .700 LEAD Outside PEND: LEVER - 8 E.X. C 2 SERIES 40/50 GRAPH LABEL: THEORETICAL INITIALS: A.S.L. TABLE: COLUMN HEADERS: - TYPE OF CHASSIS AND STEERING. - 1: LINEAR MOVEMENT OF PENDULUM LEVER BALL PIN DUE TO BAD. GEOMETRY - 2: ANGULAR MOVEMENT OF STEERING WHEEL DUE TO DROP OF AXLE ON FULL REBOUND ASSUMING SOLID S.S. TUBE - 3: MAX DEFLECTION OF S.S. TUBE SPRINGS BEFORE COMING CHOC A BLOC TO THE SPRING - 4: ANGULAR MVT OF STEERING WHEEL AFTER THE SIDE STG: TUBE HAS BEEN COMPRESSED TO THE STOP - 5: LOAD AT WHEEL RIMS OCCASIONED BY 1.5" AXLE REBOUND. STEERING REVERSIBLE EFFICIENCY MEASURED UNDER LIGHT LOADS 45 - 50 % - 6: FORCE NECESSARY AT RIM OF STEERING WHEEL TO HOLD PEND LEVER STATIONARY AND ALLOW THE S.S. TUBE TO BE COMPRESSED 1.5". EFFICIENCY 45-50% ROW 1: - Chassis/Steering: 20 H.P. INSIDE PENDULUM LEVER WITH F.W.B - Col 1: .575 TO REAR - Col 2: 35° - Col 3: .400 RATING 600 LBS/1" - Col 4: 10.5° - Col 5: 6.6 LBS. - Col 6: 4.2 LBS. ROW 2: - Chassis/Steering: 20 H.P. OUTSIDE PENDULUM LEVER WITH F.W.B - Col 1: .500" - Col 2: 38° - Col 3: .400 - Col 4: 7.5° - Col 5: 6.7 LBS. - Col 6: 4.5 LBS. ROW 3: - Chassis/Steering: 40/50 OUTSIDE 11.00" PENDULUM LEVER - Col 1: .150" - Col 2: 15° - Col 3: .600 RATING 1300 LBS/1" - Col 4: NIL - Col 5: 2.7 LBS. - Col 6: 7.9 LBS. H.E.B NOTE: NOTE THAT IN COLUMN 5 THE LOAD TRANSMITTED BY THE 20 H.P. TO THE HAND IS DOUBLE THAT OF THE 40/50 IN SPITE OF THE FACT THAT THE 20 H.P. S.S. SPRINGS ARE RELATIVELY 16% WEAKER AND ARE SET UP SO GIVING NO DOUBLE RATING. ACTUAL EFFECTIVE RATINGS SHEWN IN COLUMN 6 WHERE 20 H.P. IS MORE THAN 40% LESS THAN THE 40/50. | ||